docs: def download_vod(self, video_id):
          """
          This will return a byte string of the M3U8 playlist data
          (which contains more links to segments of the vod)
          """
          vod_id = video_id[1:]
          token = self._request_get(
              'vods/{}/access_token'.format(vod_id), url='https://api.twitch.tv/api/')
          params = {
              'nauthsig': token['sig'],
              'nauth': token['token']
          }
          m3u8 = self._request_get(
              'vod/{}'.format(vod_id), url=VOD_FETCH_URL, params=params, json=False)
          return m3u8.content